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| Categories | Seamless Precision Steel Tube |
|---|---|
| Brand Name: | Joyruns |
| Model Number: | 25.4*2.77 |
| Certification: | ISO9001 |
| Place of Origin: | Changzhou |
| MOQ: | 2Tons |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 2000Tons/Month |
| Delivery Time: | 30days |
| Packaging Details: | plastic packing, end caps, wooden box packing |
| OD size: | 6mm to 114.3mm |
| Thickness: | 1mm to 20mm |
| Standard: | DIN2391, EN10305, EN10216, EN10210 |
| Material: | ST35, ST45, ST52,E255,E235,E355 |
| Type: | cold drawning /Cold rolled |
| Delivery State: | +N, +NBK,+C,+BKS,+GBK,+N |
| Company Info. |
| Changzhou Joyruns Steel Tube CO.,LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
EN10305-1 E255 seamless cold-drawn pipe for Automotive Industry
Be used for hydraulic systems, motorcycle and automobile vibration dampers and other
fields that have high requirements to steel pipe's precision, finish cleanness and mechanic properties.
Precision tube is a kind of steel tube with tight tolerance or good surface quality through cold drawing or cold rolling. These kinds of tubes are widely used in machinery parts, automotive parts,oil&gas pipeline pigging,etc
Chemical Composition:
Standard | Steel Grade | Material Number | C | Si | Mn | P | S | Cr | Mo |
EN10305-1 | E235 | 1.0308 | <= 0.17 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
EN10305-1 | E255 | 1.0408 | <= 0.21 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
EN10305-1 | E355 | 1.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.025 | <=0.025 | - | - |
Steel Grade | (+C) | (+LC) | (+SR) | (+A) | (+N) | |||||||
Rm Tensile Strength (Mpa) Min | A Elongation (%) Min | Rm Tensile Strength (Mpa) Min | A Elongation (%) Min | Rm Tensile Strength (Mpa) Min | Rel Yield Strength(Mpa) Min | A Elongation (%) Min | Rm Tensile Strength (Mpa) Min | A Elongation (%)Min | Rm Tensile Strength (Mpa) | Rel Yield Strength (Mpa) Min | A Elongation (%) Min | |
E235 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 |
E255 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 255 | 21 |
E355 | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490-630 | 355 | 22 |
Final supply conditions:.
Designation | Symbol | Description |
Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere. |
Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
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